I also have a Janome embroidery machine. Make sure you are downloading .sew or .jef I have the digitizer program so I can also download .jan
When you transfer it to a flash drive, make sure it is a small flash drive. Less than a gig if you can find it. Put only that design on the drive. The sewing machine is not as complicated a computer as your pc. It can't handle hunting for your design in a pile of files. Hope this helps. Ann